Wrist-watch case



' May. 9, 1933. L ALD( 1,907,700

WRIST WATCH CASE Filed March 7. 1931 Patented May 9, 1933 PATENT OFFICE .LOUIS ALIX, OF GENEVA, SWITZERLAND WRIST-WATCH CASE Application led March 7, 1931, Serial No. 520,818, and in Switzerland March 10, 1930.

The object of the invention is an impervious wrist-watch case.

It is characterized by the fact that it inv cludes an interior case enclosing the movement as well as an exterior case which is hermetically closed except at one of its extrem* ities through which the first case is inserted which can slide into the second, the vone case being fitted with a ring shaped bevel and lo the other with a springy ring shaped fitting which engage one with the other at the nor- Vmail relative position of the two cases in order to close the second case in an impervious fash* ion in conjunction 'with an impervious wall vof the first case.

The attached drawing shows as an example one form of the application of the invention.

Figs. 1 and 2 are longitudinal and axial 'sections showing certain parts in different positions.

y, Figs. 3 and 4 are two end views showing also certain parts in different positions.

" Fig. .5 is a top view.

The case shown includes an interior case a, which holds the movement and having, as seen froln the top, a rectangular shape, and as seen from the side, the general conforma- 0 tion of the arc of a circle. It consists 0f a vbody b and a lid c connected by a hinge cl not closing in a specially impervious manner: ya

glass e is mounted in the lid c.

The case a can slide into the outer case f which has also, in plane view, a rectangular shape and, as seen from the side, the general conformation of th-e arc -of a circle. This case j is fitted on its left extremity with lugs g between which is a bar z, which receives one of the ends of the supple band@ of the wristwatch the other end of which encloses a bar placed between two similar lugs k of the case a: it has an opening Z which is closed by a transparent disc m, made for example, of sapphire in such a way as to prove very resistant to shocks, and set in the rim of the opening so that the closing may be impervious.

The cap of the Winder m of the movement Y, within the case ais placed between two shoulders y of the latter and is slightly less thick than these, so that it offers no resistance to the sliding of the case 7 into the case ai.

The impervious connection between Athe two cases a and f when the second is inserted fully into the first, in the relatively normal. position of a and of is obtained as follows: the right extremity n of the case a, made of a continuous impervious wall,has a larger transversal section than the remainder of it; y and displays on the level of the walls i of the case f a ring shaped housing o of a transversal rectangular section, enclosing a fitting g: this fitting is made of springy material, rubber for example, and has a transversal trapeZoid-al section the largebase of which is placed on the outside. As far as the Walls r of the case f are concerned, they end in a ring shaped bevel the point of which is on the inside. If, in these conditions, the case f is inv serted fully into the case a the bevel s of the walls r enters the housing o and compresses in it, from the interior towards the exterior, the springy fitting g thus providing the desired impervious joint.

The two cases a and f are kept in their 7 normal relative position (Fig. 2) by a spring hook t integral with j and gripping one of the extremities of a. The hook t can, however, be unhooked from this extremity, for the purpose of the disengagement of the two B0 cases a and 7 (Fig. l) by means of a transversal slide u fitted in the case a and presenting a nose c which works from above to below on the hook t: in the normal position of the cases a and f the nose o rests in a notch lw of the hook t and allows the latter to grip a (Fig. 3) if the slide u is shifted from left to right (Fig. 4) the nose v forces the hook t to disengage itself from a.

An inspection of the drawing shows that the casing also forms the lock fasteningof the bracelet since the two cases are each united to one of the ends of the fastening and permit of their being oined.

What I claim as my invention and desire to secure by Letters Patent in the United States is .1. In an impervious casing 0f a wristwatch an interior case having an opening for the face of the watch, an exterior case hermetically shut, except at one of its extremities through which is inserted the interior case which can slide into the exterior one,

said exterior case having a window therein, 5 one of the cases being fitted with a ring shaped bevel and the other with a springy ring shaped fittingwhich grip one with the other at the relative normal position of the two cases in order to close the exterior case in an impervious fashion in conjunction with an impervious wall of the interior case, the opening for the face of the watch being located in juxtaposition to the window in the exterior case. l

2. In an impervious casing of a wristwatch an arcuate exterior case hermetically shut, except at one of its extremities through which is inserted an interior case which can slide into the arcuate exterior one, one of the cases being fitted with a ring shaped bevel and the other with a springy ring shaped .fitting which grip one with the other at the relatlve normal osition of the two cases in order to close t e exterior case in an impervious fashion in conjunction with an impervious wall, of the inner case, the ring shaped fittin being placed in an open housingon the side of the other case.

In an impervious wrist-watch casing an arcuate interior case having an opening for the face of `the watch, an arcuate exterior case hermetically shut except at one of its extremities, through which is inserted the interior case which can slide into the exterior one, said exterior case having a window therein, one of the cases being fitted with a ring shaped bevel and the other with a springy r' shaped fitting which grip one with the ot er at the relative normal position of the two cases in order to close the exterior case in an impervious fashion in con junction with an impervious wall of the interior case, the opening for the face of the watch being located in juxtaposition to the window in the exterior case, the ring shaped fitting bein placed in an open housing arranged in the interior case which, with this object shows a larger transversal section at one of its extremities than on the remainder of its length.

4. In an impervious wrist-watch casing an arcuate interior case having an opening for the face of the watch, an arcuate exterior case hermetically shut except at one of its extremiu ties through which is inserted the interior case which can slide into the exterior one,

said exterior case having a window therein, one of the cases being fitted with a ring shaped bevel and the other with a springy ring shaped fitting which grip one with the other at the relative normal position of the two cases in order to close the exterior case with the opening for the face of the watch being located adjacent the window therein. in conjunction with an impervious wall of the interior case the fitting presenting an inclined surface on the side on which the bevel of the other case comes into contact.

5. In an impervious wrist-watch casing an arcuate interior case having an opening for the face of the watch, an arcuate exterior case having a window therein hermeticall)1 shut except at one of its extremities through which is inserted the interior case which can slide into the exterior one, one of the cases being 75 fitted with a ring shaped bevel and the other with a springy ring shaped fitting which grip one with the other at the relative normal position of the two cases in order to close the exterior case with the opening for the ,n face of the watch being located adjacent the window therein, in conjunction with an impervious wall of the interior case, a sprin hook which is fitted to one of the cases an grips the other maintainin the two cases in m5 their relative normal posit1on.

6. In an impervious wrist-watch casing an arcuate interior case having an opening for the face of the watch, an arcuate exterior case having awindow therein hermeticall im shut except at one of its extremities thr which is inserted the interior case which can slide into the exterior one, one of the oase being fitted with a ring shaped beveland the other with a springy ring sha ed fitting I which grip one with the other at t e relative normal position of the two cases in order to close the exterior case with the opening for the face of the watch being located adjacent the window therein, in conjunction with anfl impervious wall of the interior case, a spri hook which is fitted to one of the casesan grips the other maintaining the two cases in their relative normal position, a slide which moves in a transverse direction in one of the M6 cases presenting a nose shaped so that it can actuate the hook in order to separate it from the case with which it grips at the said normal relative position of the cases.

7. In an impervious wrist-watch casing an "t" arcuate interior case having an opening for the face of the watch, an arcuate exterior case having a window therein hermetically shut except at one of its extremities through which is inserted the interior case which can 3315 slide into the exterior one, one of the cases being fitted with a ring shapedk bevel and the other with a springy ring sha ed fitting which grip one with the other at t e relative normal position of the two cases in order T120 to close the second case in an impervious fashion, in conjunction with an impervious wall of the first case, the opening in the interior case for the face of the watch being located adjacent the window opening in the #s exterior case, a spring hook which is fitted to one of the cases and grips the other main taining the two cases in their relative normal position, a slide which moves in a transversal direction in one of the cases presenting fu signature.

LOUIS ALIX. 

